diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/sys/dmu_zfetch.h | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/include/sys/dmu_zfetch.h b/include/sys/dmu_zfetch.h index 34b711fc0..4c220b0c7 100644 --- a/include/sys/dmu_zfetch.h +++ b/include/sys/dmu_zfetch.h @@ -49,20 +49,26 @@ typedef struct zfetch { typedef struct zstream { uint64_t zs_blkid; /* expect next access at this blkid */ - uint64_t zs_pf_blkid; /* next block to prefetch */ + uint64_t zs_pf_blkid1; /* first block to prefetch */ + uint64_t zs_pf_blkid; /* block to prefetch up to */ /* * We will next prefetch the L1 indirect block of this level-0 * block id. */ - uint64_t zs_ipf_blkid; + uint64_t zs_ipf_blkid1; /* first block to prefetch */ + uint64_t zs_ipf_blkid; /* block to prefetch up to */ - kmutex_t zs_lock; /* protects stream */ - hrtime_t zs_atime; /* time last prefetch issued */ - hrtime_t zs_start_time; /* start of last prefetch */ list_node_t zs_node; /* link for zf_stream */ + hrtime_t zs_atime; /* time last prefetch issued */ zfetch_t *zs_fetch; /* parent fetch */ - zfs_refcount_t zs_blocks; /* number of pending blocks in the stream */ + boolean_t zs_missed; /* stream saw cache misses */ + zfs_refcount_t zs_callers; /* number of pending callers */ + /* + * Number of stream references: dnode, callers and pending blocks. + * The stream memory is freed when the number returns to zero. + */ + zfs_refcount_t zs_refs; } zstream_t; void zfetch_init(void); @@ -70,7 +76,10 @@ void zfetch_fini(void); void dmu_zfetch_init(zfetch_t *, struct dnode *); void dmu_zfetch_fini(zfetch_t *); -void dmu_zfetch(zfetch_t *, uint64_t, uint64_t, boolean_t, +zstream_t *dmu_zfetch_prepare(zfetch_t *, uint64_t, uint64_t, boolean_t, + boolean_t); +void dmu_zfetch_run(zstream_t *, boolean_t, boolean_t); +void dmu_zfetch(zfetch_t *, uint64_t, uint64_t, boolean_t, boolean_t, boolean_t); |